Delivery form: in amber glass bottle with pouring ring and tamper-evident cap Ingredients: Distilled water (conductivity at filling < 0.5 µS/cm) Fine silver (additionally hardened, Ag content (purity) min. 99.99%Storage:To maintain the state of charge as long as possible, the bottles should always be kept closed, cool and protected from sunlight. Avoid the vicinity of electromagnetic fields (refrigerator, TV, microwave, etc.) at all costs! Please keep away from children! Further information about colloidal silver can be found here Delivery time: Colloidal silver is always shipped fresh. Therefore, the delivery may be delayed by 3 - 6 days! Please note that for legal reasons we offer this product for technical purposes only. We assume no responsibility for any other use. Tip: Colloidal silver as an additive for wall paints should be used at least with 100 ppm. We can also produce higher concentrations on request.